I could use some advice
I'm shooting a bow with 23 inch draw length and its set at 38 pounds. What type of broadheads would you guys recommend? The Magnus buzzcuts 2 blades I ordered haven't showed up yet. I've got some muzzy fixed 3 blades 100 grain. Do you think id be ok to use them?

At that low of poundage have you thought about going down to 80 grain broads ? I like the short fixed blade style broads myself, mechanicals are good but only if you buy the high dollar ones, I shoot muzzy's in 100 grain but I'm shooting 65 lbs. And at that low of poundage I dought it would matter if you shot 3 or 4 blade, I would stick with 3 blade and line it up with your fletching. ( get your broad tight then take a lighter and heat the glue that holds the insert in the shaft and with a broad head tool turn your broad and insert till its inline with your fletching )

Ya I would rather have the 85 grain but I'm in the middle of nowheresville and that's all they had. If you guys think the muzzys won't work I can drive an hour n a half away to get something different. I just wanted some opinions before I make the drive.

They will work just fine. That low of poundage your not going to have much problem other than reach
I wouldn't go out of the way for anything different. I also have the long drive to anything so I do a lot of online shopping,(eBay,Bass pro, places like that)

My nephew shot a deer with his bow that pulls at 40lb. He was using 100gr. G5 Montec heads. This is a 3 blade broadhead. Just make sure those blades are sharp! I sharpened his right out of the package. It seems like that is one thing these new broadheads lack...a good sharp edge. His arrow went passed through both sides, but did not totally exit the deer. it ended up falling out about 50 yards down the trail. This seems like a very marginal setup for shooting deer sized game, but if the shot is placed right it can work. Good luck.

My self if I had to hunt with 40 lbs, I would look at neck shots and 20 yard max shots. I say neck because there are no bones you have to penitrate to hit vitals, the throat and main veins, and of corse the spine. Now I know the spine is made up of bone but you don't have to hit it but it's a plus if you did because then more than likely the deer dropped right there.
Now if you did a chest shot it take a lot to penitrate the rib cage, it can and has been done but I think the risk of lost wounded game wound be high with that kind of poundage at like 20 yards and anything over I woudnt even try. IMO
I have my sons bow set up at 40 lbs with 80 grain muzzy's and his bow don't have much power at 20 yards at all and it might just be his bow but I think it's the low poundage. But I'm sure at 10 to 15 yards he'll get the chance to put the smack down on a deer with it

I would use the muzzys you have right now and plan on short distance shots.
out to 20yds should be OK but I wouldn't attempt further than that with only 40 lbs draw weight.

You probably wont get checked for it but I would not be offering you all the advice I should if I didnt advise you to check your states game laws regarding legal bow requirements. here in Illinois the bow must obtain a minimum 40lb draw weight somewhere within a 28 inch draw.